Exactly what makes a MOPAR a "Matching Numbers" car?

Some people want all the VINs to match but also want numbers on wiper motors, distributors, alternators, starters etc etc etc to be correct for that car. That stuff matters to some people because it does that is what they value that is what they like. If it doesn't matter to you consider yourself lucky you don't have to fret over all of that kind of stuff.